Supporting structure for typewriters, adding machines, bookkeeping machines, and the like



Feb. 5, 1929. 1,700,784

E. G. BENNETT I SUPPORTING STRUCTURE FOR TYPEWRITERS, ADDING MACHINES, BOOKKEEPING MACHINES, AND THE LIKE Filed June 6, 1927 4 Sheets-Sheet Inventor Attornqy Feb. 5, 1929. 1,700,784

E. G. BENNETT SUPPORTING STRUCTURE FOR TYPEWRI'I'ERS, ADDING MACHINES,

' BOOKKEEPING MACHINES, AND THE LIKE Filed June 6, 927 4 Sheets-Sheet 2 Inventor Ear? G. Fehizefi Attorney Feb. 5, 1929. 1,700,784

E. G. BENNETT SUPPORTING STRUCTURE FOR TYPEWRITERS, ADDING MACHINES,

BOOKKEEPING MACHINES, AND THE LIKE Fileq Juzge 1927 4 sheets-sheet 2 g? I P 29 v 2C, 22 oo (Fo i F 1 [nwentor Ear] Q Fen 1197 7 Attorney Feb. 5, 1929. 1,700,784

E. G. BENNETT SUfPORTING STRUCTURE FOR 'I'YPEWRITERS, ADDING MACHINES,

BOOKKEEPI NG MACHINES, AND THE LIKE Filed. June 1927 4 Sheets-Sheet 4 Inventor Earl G Zem eff Attarngy Patented Feb. 5,1929 i I 1,70%,784- I unites sta s; mum

SUPPORTING STRUCTURE non rrrnwnrrnns, ADDING ivmonmns, BOOK'KZEEPING, MA-

, V cnmns, AND THE LIKE. 7

Application filed June 6, 1927. Serial No. 196,'777.

This invention relates to new and useful ing been actuated to raise the typewrit'erto improvements in supports for typewriters, the top of thedesk, bookkeeping machines, adding machines, and Fig. '3 is a front elevationof the mechaother similar devices used'in oflices, banks, nism as disclosed in the typewriter supportandbusiness houses, and aims to provide a ing boar-d being partially disclosed in cross;.

mechanism of thischaracter that is readily section, forindicatingthe means whereby the I adaptable for incorporation within a desk, rear end of the board is attached to certain the structure beingsuch as to permit the maunits of my device,andv f "chine to be readily raisedor lowered so that Fig. dis a View similar to .1, disclosing 10 when in lowered position, the top of the desk the device as associated with a .desk having whichis of the'hinged variety, may be closed an ordinary hinged lid,ft-he mechanism in v for obviously permitting the surface of the this instance being operable by afoot lever,

v desk to be used for other purposes. and in this instance, a counter-balancing Furthermore, one form of the invention weight being provided in lieu of the :desk lid, consists of a means adaptable directly to the disclosed in Figs. 1, '2 and. 3, which as pre-. desk lid so that when the lid is swung into I viously stated performs the function .of a

open position, thema'chine willjbe automaticounter-balancing weight.

cally raised, whereas,upon the closing of the First having particular reference; lid, it willbe automatically lowered. How- 1, 2 and ,3,A will designate the generally ever, it is not absolutely necessary that the conventional d-esign of desk wherein the top mechanism be directly attached to the lid, thereof is provided with :alhin'ged lid 13, the as foot or hand means :may be provided for front side of-the desk being. open within the facilitating the raising and lowering of the length of the lid as generally suggested in machine. 'Fig.8.,

2 V In this instance however, a counter-balanc- Inthis particularconstruction-of supporting weight is employed in lieu of the desk ing'device, the hinge connection between the lid which in that instance acts as a counterrear edge of'the lid B and the top of the desk balancing medium. a r f at the edge of the opening, is removed.

'By reason of the present invention, thema- The supporting mechanism per. se, con- 30 chine is always supported in a verticaleposisists of a lazy-'tong'str'ucture arrangedwithe0 .tion and is not tilted over to an angular poin the desk Aat opposite sides ofthe front sit-ion within the confines of the desk when openingv therein, eaGhJlaZyd-ong structure be t'i u I ing-of identical elements, therefore a descrip- Structures of this character permitlittle tion of one will suflice' for-both.

35 or'no leg room beneath'the deskjwhen the Pivotally interconnected as at'5 which ,p'ivsame is being'employed for the assortment ot is fixed to the adjacent side of the desk of papers, writing,"etc. V q opening, and intermediate the ends thereof,

In the drawings wherein there is disclosed is a pair of elongated crossbarsGand 7 Pivtwo embodiments of the present invention: otallyconnec'ted to the lower endsIof these 40 Figure 1 is a fragmentary section through c ss-b a e tic y end ng ks 8 nd a generally conventional design of desk, 9, the rearmOSt link being slightly shorter equipped with my improved supporting 'than theforemost one, as indicated :in Figs.

means, in this instance, the lid of the desk 1 j I being actually associated with .the mecha- T upp ends f h s links 8 and 9 are nis m, whereby when the lid israised, the .piv a y i i y extending machine will be automatically elevated, bars 10 and 11, which bars arepivoted' ad 7 whereas on the other'hand, when the lid is jacent their inner", ends to fixed pivots 10 lowered, the machine will bealso lowered. and 11', the pivot 10 ofjthe rearmost bar 10,

Fig, 2 is a similar view disclosing the desk-1' being sli a 'htly above the pivet L1",egain see lid inopen position andthe machanisln ht 1v Figs, 1 and it, I 9

the bars? and'10; This interconnecting bar The length of the bar 10 is greater than that Obviously, when the lid B of the desk is of the bar 11 so that the inner end ofsaid bar 10 will extend beyond the inner end of the bar 11, while pi'votally interconnecting the inner ends of said ,bars, is a short link 12; The lower end of the bar10 extends beyond the end of the link 9 to which it" is pivoted and pivoted tothe extreme inner end of said bar 10, is an upwardly extending short link 13.

Pivotally supported by fixed pivot 14;, above the bar 10 in'back-of and'slightly below the fixed pivot 10 of the bar 10, is the lower rearwardly extending end of an elongated upwardly extending L-shaped lever 15, the upper end of which has pivotal. connection as at 16 to a bracket 17 arranged upon the bottom side of the desk lid B in slight spaced re lation with the forward edge thereof. The extreme lower end of this 'L-bar 15 is pivotally connected to the upper end of the link 13 so that when the L'-balr is swung upon its pivot, 14, a direction indicated in Fig. 1, to that indicated in Fig.2, the bar 10 will be swung at its inner end in a downward direction upon its pivot 10'while the connection between the bar 10 and the'bar 7 will cause I the upward swinging of the outer end of said bar 7 e I Z V Pivotally secured to the upper ends of the 'cross ba'rs 6 and 7 are similarly inwardly con- 'connected'by' an adjustable length bar 21,

andthis at a point intermediate the fixed pivots 5 arid the connecting links 9 between will serve to brace the lazy tong structures at opposite sides of the opening and cause the elements of the structure at opposite sides to move in unison.

Further at thepivotal points between the upper cross bars 18 and19, of the two lazya tong structures, said bars 18 and '19 are interconnected by an adjustable cross bar 22 for 1 further bracing theunits andto assist the bar 21 in causing the elements of the units to move in unison; v

Pivoted to the upper ends of the uppermost bars 18 at the lazy-tong units at opposite sides ofthe desk opening, are depending, L-shaped brackets 23 to which is rigidly secured the horizontally extending machine supporting board 24. The upper ends of the cross bars 19 have pivotal connection with the depending L- shaped brackets 25,- each of which is equipped with an inwardly extending roller 26, upon which the adjacent edge of the board 24 is supported, see Fig. 3,,this connection between each of the bars 19 and the board, permitting the upper ends of the bars to move inwardly and outwardly during the raising or lowering of the machine, but yet to support the board in horizontal position.

closedas indicated in Fig. 1, a lifting of the same at its forward end will cause the same I to rise and then drop downwardly between the V by the reference character C.

In the form of the invention indicated in Fig. 4, the L-shaped bars 15 of the lazy-tong r structures are dispensed with while in this instance, the fixed pivot 10* for the bar 10 is arranged below the fixed pivot 11** of the bar 11. In this instance also, the connecting link 8 between the ends of the bar 11*, and the forward cross bar 6*, extends at its lower end beneath the pivot connection to the bar- 6, formed with an outwardly extending curved foot plate 27*.

Depending from the pivotal connection between the link 13*, which in this instance is,

slightly longer than the link 13 in the other form of the invention, and the cross bar 7 a is a hanger 28 that carries removable weights In this form of the invention, the lid B is hinged at its rear edgejto the ,top'of the desk as clearly disclosed. Obviously, when the machine is in lowered condition, a pressure in a downward direction upon the foot pedal 27 will cause the expansion of the lazytong structures, two of such structures being also applied in this form andt-he consequentraising of the machine Gfl'at which position, it will be held by reason of the counterbalancing weights 29". a

It will thus be seen that I have provided two highly novel, simple and efilciently'opcrating types of supporting devices for typewriters, bookkeeping machines, and the like,

for installation within an oflice desk, and even though I have herein shown and described these forms as consisting of certain detail structural elements, it is neverthelessto be understood that some changes may be made therein without affecting the spirit and scope of the appended claim. 7 7

Having thus described my invention, what I claim as new is n In a disappearing support for desks'of the character described, in combination with the usual rearwardly movable desk top, a support adapted to support a typewriter or similar machine, a pair of lazy tong structures upon which the support is adapted to rest, said structures having their respective upper ends associated with the ends of the machine support, a rearwardly disposed arm ture, the rearwardly disposed arms being pivotally connected with the rear portion of the machine support, while the forwardly disposed arms are in slidable supporting relation with the forward portion of the support, the pivotal connection of the lower tong structure being connected with the desk structure, a pair of bars pivotally connected together at one of their ends, while their opposite ends are connected to the lower extremities of the respective lazy tong structure, and a pair of L-sh'aped levers pivotally connected 10 at their intermediate portions to the desk structure, the upper ends of the levers being connected to the desk top, while the lower ends thereof are connected to the pivotal bar s. In testimony whereof I affix my signature.

EARL G. BENNETT. 

